How to Change the Coolant in a 2019 Husqvarna TC65: Step-by-Step Guide
Shop parts for a 2019 Husqvarna TC65 Dirt Bike.
Changing the coolant in your 2019 Husqvarna TC65 is essential maintenance that protects the engine from overheating and internal corrosion. This guide provides precise steps tailored for the TC65–a youth-focused, high-performance two-stroke that's a direct descendant of Husqvarna's championship-winning MX line. The TC65 features a compact coolant system with accessible components, making routine maintenance straightforward for owners who wish to maximize reliability and performance.
What You Need
- Fresh, high-quality motorcycle coolant (preferably premixed; Engine Ice or Motorex are popular among racers)
- Clean bucket or tray for old coolant
- 8 mm socket or wrench
- Soft rags and safety gloves
- Distilled water (optional–for a complete flush)
- Funnel
Preparation: Safety First
- Ensure the engine is cool before working to avoid burns.
- Work in a well-ventilated area.
- Wear gloves and eye protection–coolant is toxic and can harm skin or eyes.
If coolant contacts your eyes or skin, flush with water immediately and seek medical advice if needed.
Step-by-Step Coolant Change for the TC65
- Remove the seat and right side panel as needed to access the radiator cap and hoses. This makes access easier and reduces mess.
- Remove the radiator cap slowly to release system pressure. Always do this before draining to avoid vacuum lock, which can trap coolant.
- Locate the water pump drain bolt (8 mm) on the engine side cover. Place the drain bucket directly underneath before removal.
- Loosen and remove the drain bolt. Allow all old coolant to drain completely. Gently tilt the bike slightly away from the side stand if needed for a better drain.
- If performing a full flush, reinsert the drain bolt. Pour distilled water into the radiator, reinstall the cap, and briefly run the engine for 60 seconds. Allow to cool, then repeat the drain process. This helps remove residual old coolant or debris.
- Reinstall and tighten the drain bolt after the final drain. Check the condition of the washer on the bolt to ensure it seals correctly; replace if damaged.
- Refill with fresh coolant. Slowly pour coolant into the radiator until just below the filler neck. Filling slowly helps minimize trapped air.
- Air may become trapped in the system. Gently rock the bike or carefully crack the small bleeder screw on top of the engine (if equipped) until coolant flows without air bubbles, then retighten.
- Reinstall the radiator cap securely, and wipe up any spills.
- Start the engine and let it idle for 2–3 minutes. Shut down and check coolant level again after cooling; top up if needed.
- Inspect for leaks at the drain bolt and all hose connections.
- Reinstall bodywork and take a quick test ride, watching for normal temperature and no leaks.
Special Notes for the 2019 TC65
- The TC65 uses a small capacity radiator system–never overfill or run the bike with low coolant. Overfilling can cause overflow, underfilling will cause overheating.
- Factory coolant is usually premium, but many owners opt for race coolant blends (like Engine Ice) that provide improved heat transfer and boil-over protection.
- Inspect hoses and clamps during the process. The TC65's compact layout means hoses are exposed; replace any that show swelling, wear, or leaks.
- If your bike is raced hard or used in muddy conditions, increase service intervals–flush and refill more often as debris and mud can impact cooling performance.
Disposal
- Coolant is toxic. Never pour old coolant on the ground or down drains. Take it to a local auto parts store or hazardous waste facility.
Final Check
- Monitor the coolant level after your first real ride. Small air pockets may continue to work out, requiring a top-off.
Related Shopping Categories
Shop Radiators for a 2019 Husqvarna TC65 Dirt Bike.
Shop Coolant for a 2019 Husqvarna TC65 Dirt Bike.
Shop Temperature Sensors for a 2019 Husqvarna TC65 Dirt Bike.
Shop Tools for a 2019 Husqvarna TC65 Dirt Bike.
Shop Radiator Hoses for a 2019 Husqvarna TC65 Dirt Bike.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.